20313131641433 has 8 divisors (see below), whose sum is σ = 20352448509000. Its totient is φ = 20273850471168.

The previous prime is 20313131641393. The next prime is 20313131641447. The reversal of 20313131641433 is 33414613131302.

It can be written as a sum of positive squares in 4 ways, for example, as 8553911035849 + 11759220605584 = 2924707^2 + 3429172^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20313131641433 - 2¹⁰ = 20313131640409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20313131641393 and 20313131641402.

It is not an unprimeable number, because it can be changed into a prime (20313131641463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7785008 + ... + 10061441.

It is an arithmetic number, because the mean of its divisors is an integer number (2544056063625).

Almost surely, 2^{20313131641433} is an apocalyptic number.

It is an amenable number.

20313131641433 is a deficient number, since it is larger than the sum of its proper divisors (39316867567).

20313131641433 is a wasteful number, since it uses less digits than its factorization.

20313131641433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17848651.

The product of its (nonzero) digits is 46656, while the sum is 35.

Adding to 20313131641433 its reverse (33414613131302), we get a palindrome (53727744772735).

The spelling of 20313131641433 in words is "twenty trillion, three hundred thirteen billion, one hundred thirty-one million, six hundred forty-one thousand, four hundred thirty-three".